After walking...strength work:3 rounds - NFT5 (each side) pistol squats (small plate under each foot to make them doable)15 TTB (toes-to-bar)3 rounds - NFT3 ground-to-overhead (85,85,90)15 GHD sit-upsHere's a good article on the benefits of pistol squats to runners...although they are good for everyone. I feel like they are worth learning...or at least trying to learn. I don't actually know many folks who can do them...particularly aging distance runners...but, with a bit of work, we should be able to at least come close.